Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data
The complex aerodynamic shape and structural form affect the wind-induced vibration coefficient <i>β</i> of landscape towers with a twisted column and spiral beam (short for LTs). To clarify the <i>β</i> distribution characteristics, evaluate the applicability of existing loa...
| Main Authors: | , , , , , , |
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| Format: | Article |
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MDPI AG
2022-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/10/1635 |
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| author | Shuang Zhao Chengtao Zhang Jiahao Yue Zhitao Yan Jun Liu Bin Zhang Bowei Liu |
| author_facet | Shuang Zhao Chengtao Zhang Jiahao Yue Zhitao Yan Jun Liu Bin Zhang Bowei Liu |
| author_sort | Shuang Zhao |
| collection | DOAJ |
| description | The complex aerodynamic shape and structural form affect the wind-induced vibration coefficient <i>β</i> of landscape towers with a twisted column and spiral beam (short for LTs). To clarify the <i>β</i> distribution characteristics, evaluate the applicability of existing load codes, and provide accurate design wind loads, wind tunnel tests and numerical simulations were carried out on a LT. The LT’s aerodynamic coefficients and wind-induced responses were measured using rigid sectional and aeroelastic models. Furthermore, the displacement wind-induced vibration coefficient <i>β<sub>d</sub></i> and inertial load wind-induced vibration coefficient <i>β<sub>i</sub></i>(<i>z</i>) of the LT were calculated from these measured data. Combined with test data and a finite element model, the impacts of the wind speed spectrum type, the structural damping ratio <i>ξ</i>, and the peak factor <i>g</i> on <i>β</i> of the LT are analyzed. The accuracy of <i>β</i> of the LT calculated by Chinese and American load codes was examined and given the correction method. The results showed that the wind yaw angle had a significant impact on <i>β<sub>d</sub></i> of the LT, which cannot be neglected in current load codes. The abrupt mass increase at the platform location makes the distribution characteristics of <i>β<sub>i</sub></i>(<i>z</i>) of the LT different from conventional high-rise structures. The values of <i>ξ</i> and <i>g</i> have a significant impact on the calculation results of <i>β</i>, which are the key to the accurate design wind loads of LTs. The existing load codes are not suitable for LTs, and the correction method proposed in this paper can be used to improve them. |
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| last_indexed | 2024-03-09T20:33:00Z |
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| series | Buildings |
| spelling | doaj.art-5641593b482c4940bc4ae9af1374f8b02023-11-23T23:17:29ZengMDPI AGBuildings2075-53092022-10-011210163510.3390/buildings12101635Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test DataShuang Zhao0Chengtao Zhang1Jiahao Yue2Zhitao Yan3Jun Liu4Bin Zhang5Bowei Liu6School of Civil Engineering and Architecture, Chongqing University of Science & Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science & Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science & Technology, Chongqing 401331, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science & Technology, Chongqing 401331, ChinaChina Construction Second Engineering Bureau Ltd., Beijing 100160, ChinaCMCU Engineering Co., Ltd., Chongqing 400039, ChinaCMCU Engineering Co., Ltd., Chongqing 400039, ChinaThe complex aerodynamic shape and structural form affect the wind-induced vibration coefficient <i>β</i> of landscape towers with a twisted column and spiral beam (short for LTs). To clarify the <i>β</i> distribution characteristics, evaluate the applicability of existing load codes, and provide accurate design wind loads, wind tunnel tests and numerical simulations were carried out on a LT. The LT’s aerodynamic coefficients and wind-induced responses were measured using rigid sectional and aeroelastic models. Furthermore, the displacement wind-induced vibration coefficient <i>β<sub>d</sub></i> and inertial load wind-induced vibration coefficient <i>β<sub>i</sub></i>(<i>z</i>) of the LT were calculated from these measured data. Combined with test data and a finite element model, the impacts of the wind speed spectrum type, the structural damping ratio <i>ξ</i>, and the peak factor <i>g</i> on <i>β</i> of the LT are analyzed. The accuracy of <i>β</i> of the LT calculated by Chinese and American load codes was examined and given the correction method. The results showed that the wind yaw angle had a significant impact on <i>β<sub>d</sub></i> of the LT, which cannot be neglected in current load codes. The abrupt mass increase at the platform location makes the distribution characteristics of <i>β<sub>i</sub></i>(<i>z</i>) of the LT different from conventional high-rise structures. The values of <i>ξ</i> and <i>g</i> have a significant impact on the calculation results of <i>β</i>, which are the key to the accurate design wind loads of LTs. The existing load codes are not suitable for LTs, and the correction method proposed in this paper can be used to improve them.https://www.mdpi.com/2075-5309/12/10/1635landscape towerwind-induced vibration coefficientwind tunnel testnumerical simulationwind speed spectrum |
| spellingShingle | Shuang Zhao Chengtao Zhang Jiahao Yue Zhitao Yan Jun Liu Bin Zhang Bowei Liu Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data Buildings landscape tower wind-induced vibration coefficient wind tunnel test numerical simulation wind speed spectrum |
| title | Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data |
| title_full | Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data |
| title_fullStr | Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data |
| title_full_unstemmed | Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data |
| title_short | Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data |
| title_sort | wind induced vibration coefficient of landscape tower with curved and twisted columns and spiral beams based on wind tunnel test data |
| topic | landscape tower wind-induced vibration coefficient wind tunnel test numerical simulation wind speed spectrum |
| url | https://www.mdpi.com/2075-5309/12/10/1635 |
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